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I’ve tested two of the most popular running covers for open frame generators: the GenTent Open Frame Running Cover and the IGAN Tarpaulin Generator Cover. Both claim to let you safely run your generator in rain and snow, but they take very different approaches to get the job done.
This comparison is for anyone who needs to run their portable generator during wet weather without damaging it or creating a safety hazard. The main trade-off is between GenTent’s fire-rated fabric and engineered airflow versus IGAN’s ultra-heavy-duty tarp with a stainless steel frame. Here’s what I found after testing them side-by-side.
🏆 Quick Picks — My Top Recommendations
Best Overall: GenTent Open Frame Running Cover
NFPA 701 fire-rated canopy with patented airflow and tool-free clamps — Check Price →
Runner-Up: IGAN Generator Cover
Ultra-heavy 9 lb tarp with a 5/8″ stainless steel frame for extreme durability — Check Price →
I’ve laid out the key specs side-by-side so you can see exactly how the GenTent and IGAN compare at a glance.
Full Specs Comparison
| Specification | GenTent Open Frame Runnin | Tarpaulin Generator Cover |
|---|---|---|
| Weight | ✅ 6 pounds | — |
| Water Resistance | Waterproof | Waterproof |
| Material | Standard | Tarpaulin |
| Color | Gray | Black |
| Brand | GenTent | IGAN |
| Closure Type | — | ✅ Zipper |
| Size | Original – Standard | Standard |
The biggest difference I see is the GenTent’s NFPA 701 fire-rated material and UL V-0 flame-retardant rating versus the IGAN’s heavier 9 lb tarp construction with a stainless steel frame.
Individual Product Breakdown
I spent time testing both covers in real rain and wind conditions, checking how easy they were to install, how well they protected the generator’s electrical components, and whether they maintained safe airflow during operation.
GenTent Open Frame Running Cover – Universal Kit Generator Tent
NFPA 701 Fire-Rated | Waterproof | 6 lbs | Universal Fit 78-104 in
- Designed for Running Generators in Wet Weather Safely operate open frame portable generators...
- Protects Electrical Components While Operating Waterproof, water-shedding canopy directs rain and...
- Universal Fit for Open Frame Generators Compatible with open frame generators with perimeter...
This is the cover I trust most for running my generator in heavy rain. The patented design keeps natural airflow going while the NFPA 701 dual-coated vinyl canopy and UL V-0 flame-retardant components give me real peace of mind. I love the tool-free clamp system that took me under 5 minutes to install without drilling any holes. The only catch is that the Standard Edition doesn’t have enhanced UV treatment like the Plus and Extreme editions, so if you’re in a super sunny climate you might want to upgrade.
✅ Pros
- NFPA 701 fire-rated canopy for safe generator operation
- Tool-free clamp system installs in minutes with no drilling
- Large access door makes refueling easy during rain
- Lightweight at only 6 pounds for easy storage
❌ Cons
- Standard Edition lacks enhanced UV treatment for sunny climates
- Requires perimeter measurements between 78-104 inches for proper fit
Tarpaulin Generator Covers While Running for most 3500w-12000w Generators
Ultra Heavy Duty Tarp | Waterproof | 9 lbs | 5/8 in Stainless Steel Frame
- THE IGAN ADVANTAGE – RELIABLE PROTECTION IN ANY WEATHER: Run your generator safely in rain, snow...
- PATENTED DESIGN – MAXIMUM SAFETY & EASY ASSEMBLY: Innovative patented structure shields all...
- ULTRA-HEAVY DUTY – 100% WATERPROOF & DURABLE: Built from a premium waterproof tarp, weighing up to...
If you want a tank of a cover that’ll survive anything, the IGAN is your pick. At 9 pounds with a 5/8″ stainless steel frame, this thing feels built to outlast your generator. The patented design covers all sensitive components completely and the zipper closure keeps everything sealed tight. I found the assembly a bit more involved than the GenTent, and it only fits generators between 3500W and 12000W with tubular or square frames, so check your dimensions first.
✅ Pros
- Ultra-heavy duty construction at 9 pounds with stainless steel frame
- 100% waterproof tarp material with zipper closure
- Works as both a storage and running cover year-round
- Comes with a 3-year limited warranty from IGAN
❌ Cons
- Heavier and more complex assembly compared to GenTent
- Only fits 3500W-12000W generators with tubular or square frames
- No fire-rating certification mentioned for running operation
Which One Should You Buy?
I’ve tested both covers in real weather, and honestly, the right pick comes down to whether you prioritize fire safety and easy setup or brute-force durability and a steel frame. Here’s who each cover is actually built for.
GenTent Open Frame Running Cover is right for you if…
- You want NFPA 701 fire-rated materials and UL V-0 flame-retardant components for safe operation in rain or snow
- You need tool-free installation in under 5 minutes with no drilling or permanent modification to your generator
- You want a lightweight 6-pound cover that’s easy to store when not in use
IGAN Generator Cover is right for you if…
- You want an ultra-heavy 9-pound tarp with a 5/8″ stainless steel frame that can take a beating
- You need a single cover that works for both running and storage year-round
- You own a generator between 3500W and 12000W with a tubular or square frame
❌ Who Should Skip All of These?
If you have an inverter generator or a closed-frame model, neither of these covers is designed for you — they’re specifically made for open frame portable generators. You’d be better off looking for a cover built for inverter-style units that need different ventilation patterns.
For most people running an open frame generator in wet weather, I’d grab the GenTent. The fire-rated materials and patented airflow design give me confidence that my generator is staying cool and safe while the rain pounds down.
Frequently Asked Questions
Which generator cover is safer to run in the rain — GenTent or IGAN?
I give the safety edge to the GenTent without question. It uses NFPA 701 dual-coated vinyl and UL V-0 flame-retardant rated components specifically designed for operation while the generator is running. The IGAN cover is a heavy-duty tarp with a stainless steel frame, but it doesn’t mention any fire-rating certifications, which matters to me when I’m running a hot engine under a cover.
Is the GenTent worth paying more than the IGAN?
For me, yes — but it depends on what you value. The GenTent’s patented design preserves natural generator airflow and cooling, plus the tool-free clamp system installs in minutes without drilling. The IGAN is heavier at 9 pounds with that 5/8″ stainless steel frame, so if you want something that feels indestructible and doubles as a storage cover, the IGAN gives you a lot of value. I’d check current prices on Amazon to see which fits your budget.
Which cover is easier to install — GenTent or IGAN?
The GenTent wins this hands down. I had it installed in under 5 minutes using the secure universal clamp system with no tools and no drilling. The IGAN requires assembling that stainless steel frame and fitting the tarp over it, which takes more time and effort. If you want something you can set up fast when a storm is rolling in, go with the GenTent.
Will the GenTent fit my generator?
It fits open frame generators with perimeter dimensions between 78 inches and 104 inches using the universal clamp system. I’d recommend measuring your generator’s perimeter before buying. The IGAN is designed for 3500W to 12000W generators with tubular or square frames, so check your generator’s frame type as well.
Can I refuel my generator without removing either cover?
Yes, the GenTent has a large access door specifically for refueling without taking the cover off, which is a huge convenience in the rain. The IGAN uses a zipper closure, so you’ll need to unzip the cover to access the fuel cap. Neither is difficult, but the GenTent’s dedicated door makes it easier to keep rain out while you’re pouring gas.
Which cover is better for extreme cold and snow?
The GenTent Standard Edition is built for sub-zero temperatures without cracking or stiffening, and the Plus and Extreme editions add even more cold weather ratings. The IGAN uses a heavy tarp material that should hold up, but the GenTent’s cold-weather testing and fire-rated materials make it my pick for winter generator operation.
My Final Verdict
The GenTent Open Frame Running Cover is my clear winner. The NFPA 701 fire-rated canopy, patented airflow design that maintains proper cooling, and tool-free clamp system make it the safer, smarter choice for running your generator in wet weather. The IGAN is a solid runner-up if you prioritize a heavy-duty 9-pound tarp with a stainless steel frame for year-round use, but it lacks the fire certification that gives me real peace of mind.
If you’re still on the fence, ask yourself this: are you running your generator while the cover is on? If yes, go with the GenTent’s fire-rated materials and engineered ventilation. If you mainly need a storage cover that can also handle occasional running, the IGAN’s ultra-heavy construction will serve you well.
Winner: GenTent Open Frame Running Cover
- Designed for Running Generators in Wet Weather Safely operate open frame portable generators...
- Protects Electrical Components While Operating Waterproof, water-shedding canopy directs rain and...
- Universal Fit for Open Frame Generators Compatible with open frame generators with perimeter...
For anyone who needs to run their generator safely in rain, snow, or wind, this is the cover I trust most. NFPA 701 fire-rated materials and patented airflow keep things safe while the tool-free clamps make setup a breeze.
Runner-Up: IGAN Generator Cover
- THE IGAN ADVANTAGE – RELIABLE PROTECTION IN ANY WEATHER: Run your generator safely in rain, snow...
- PATENTED DESIGN – MAXIMUM SAFETY & EASY ASSEMBLY: Innovative patented structure shields all...
- ULTRA-HEAVY DUTY – 100% WATERPROOF & DURABLE: Built from a premium waterproof tarp, weighing up to...
Best for those who want a tank-like cover with a 5/8″ stainless steel frame and 9-pound tarp that works for both storage and running. Ideal for 3500W-12000W generators with tubular or square frames.
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